I need to set my xbox up using internet sharing with my powerbook. The powerbook is using the airport express and the airport is hooked up through a router..

How in the world can I do this I have been trying everything for hours!!!!

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some more details would nice. from what i am reading it seems like you have an ethernet cable from a wired router to your airport express. your pb is connecting the airport express via 802.11b/g. Now you have to figure out how to connect your xbox to your airport express and there isn't a plug for it on the airport express.

or

you are connecting wireless to your wireless router from your airport express as a client, and you are trying to connect the xbox to the airport express and use internet?

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